EP 2645782 A1 20131002 - Carrier detection and parallel GSM cell search in multimode terminals
Title (en)
Carrier detection and parallel GSM cell search in multimode terminals
Title (de)
Trägererkennung und parallele GSM-Zellensuche in multimodalen Endgeräten
Title (fr)
Détection de porteuse et recherche de cellules GSM parallèles dans des terminaux multimodes
Publication
Application
Priority
EP 12162785 A 20120330
Abstract (en)
A wireless communication apparatus (200) is arranged to detect, among a plurality of modulated carrier signals of different frequencies, at least one of the modulated carrier signals modulated with a tone burst. The wireless communication apparatus (200) comprises a receiver (230) arranged to provide a composite signal comprising the plurality of modulated carrier signals received simultaneously. An analogue-to-digital converter (240) is arranged to generate samples of the composite signal, and a block formation stage (251) is arranged to divide the samples of the composite signal into a plurality of blocks. A transform stage (252) is arranged to transform the samples of each block into frequency domain components, and a group formation stage (253) is arranged to divide the frequency domain components of each block into a plurality of groups, each group corresponding to a range of frequencies occupied by a different one of the modulated carrier signals. A tone burst detection stage (254) is arranged to perform tone burst detection on each group, and a decision stage (258) is arranged to determine which of the modulated carrier signals is modulated with the tone burst, according to which of the groups the tone burst is detected in.
IPC 8 full level
H04J 11/00 (2006.01); H04W 48/16 (2009.01)
CPC (source: EP US)
H04J 11/0069 (2013.01 - EP US); H04J 11/0089 (2013.01 - EP US); H04L 27/265 (2013.01 - EP US); H04W 48/16 (2013.01 - EP US)
Citation (search report)
- [A] US 2007254612 A1 20071101 - SIMMONS SEAN B [CA], et al
- [A] EP 2432181 A1 20120321 - ANITE FINLAND OY [FI]
- [A] HENDRA SETIAWAN ET AL: "Common wireless communication services recognition for GSM, UMTS and LTE via synchronization channels detection", COMMUNICATIONS AND INFORMATION TECHNOLOGY, 2009. ISCIT 2009. 9TH INTERNATIONAL SYMPOSIUM ON, IEEE, PISCATAWAY, NJ, USA, 28 September 2009 (2009-09-28), pages 1280 - 1285, XP031571166, ISBN: 978-1-4244-4521-9
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
EP 2645782 A1 20131002; EP 2645782 B1 20150603; US 2013295925 A1 20131107; US 9065586 B2 20150623
DOCDB simple family (application)
EP 12162785 A 20120330; US 201313852447 A 20130328